diff --git a/nac3artiq/src/codegen.rs b/nac3artiq/src/codegen.rs
index ee7f39dd..dbde7ec3 100644
--- a/nac3artiq/src/codegen.rs
+++ b/nac3artiq/src/codegen.rs
@@ -762,11 +762,12 @@ fn polymorphic_print<'ctx>(
         });
 
         let fmt = ctx.gen_string(generator, fmt);
+        let fmt = unsafe { fmt.get_field_at_index_unchecked(0) }.into_pointer_value();
 
         ctx.builder
             .build_call(
                 print_fn,
-                &once(fmt).chain(args).map(BasicValueEnum::into).collect_vec(),
+                &once(fmt.into()).chain(args).map(BasicValueEnum::into).collect_vec(),
                 "",
             )
             .unwrap();
diff --git a/nac3core/src/codegen/expr.rs b/nac3core/src/codegen/expr.rs
index b63da080..b81ca66d 100644
--- a/nac3core/src/codegen/expr.rs
+++ b/nac3core/src/codegen/expr.rs
@@ -29,6 +29,7 @@ use crate::{
         typedef::{FunSignature, FuncArg, Type, TypeEnum, TypeVarId, Unifier, VarMap},
     },
 };
+use inkwell::values::StructValue;
 use inkwell::{
     attributes::{Attribute, AttributeLoc},
     types::{AnyType, BasicType, BasicTypeEnum},
@@ -322,7 +323,7 @@ impl<'ctx, 'a> CodeGenContext<'ctx, 'a> {
                 self.raise_exn(
                     generator,
                     "0:NotImplementedError",
-                    msg,
+                    msg.into(),
                     [None, None, None],
                     self.current_loc,
                 );
@@ -582,12 +583,14 @@ impl<'ctx, 'a> CodeGenContext<'ctx, 'a> {
     }
 
     /// Helper function for generating a LLVM variable storing a [String].
-    pub fn gen_string<G, S>(&mut self, generator: &mut G, s: S) -> BasicValueEnum<'ctx>
+    pub fn gen_string<G, S>(&mut self, generator: &mut G, s: S) -> StructValue<'ctx>
     where
         G: CodeGenerator + ?Sized,
         S: Into<String>,
     {
-        self.gen_const(generator, &Constant::Str(s.into()), self.primitives.str).unwrap()
+        self.gen_const(generator, &Constant::Str(s.into()), self.primitives.str)
+            .map(BasicValueEnum::into_struct_value)
+            .unwrap()
     }
 
     pub fn raise_exn<G: CodeGenerator + ?Sized>(
@@ -646,7 +649,7 @@ impl<'ctx, 'a> CodeGenContext<'ctx, 'a> {
         loc: Location,
     ) {
         let err_msg = self.gen_string(generator, err_msg);
-        self.make_assert_impl(generator, cond, err_name, err_msg, params, loc);
+        self.make_assert_impl(generator, cond, err_name, err_msg.into(), params, loc);
     }
 
     pub fn make_assert_impl<G: CodeGenerator + ?Sized>(
@@ -3067,7 +3070,7 @@ pub fn gen_expr<'ctx, G: CodeGenerator>(
                                         ctx.raise_exn(
                                             generator,
                                             "0:UnwrapNoneError",
-                                            err_msg,
+                                            err_msg.into(),
                                             [None, None, None],
                                             ctx.current_loc,
                                         );
diff --git a/nac3core/src/codegen/numpy.rs b/nac3core/src/codegen/numpy.rs
index 6ebffe80..ff8c55eb 100644
--- a/nac3core/src/codegen/numpy.rs
+++ b/nac3core/src/codegen/numpy.rs
@@ -257,7 +257,7 @@ fn ndarray_zero_value<'ctx, G: CodeGenerator + ?Sized>(
     } else if ctx.unifier.unioned(elem_ty, ctx.primitives.bool) {
         ctx.ctx.bool_type().const_zero().into()
     } else if ctx.unifier.unioned(elem_ty, ctx.primitives.str) {
-        ctx.gen_string(generator, "")
+        ctx.gen_string(generator, "").into()
     } else {
         unreachable!()
     }
@@ -285,7 +285,7 @@ fn ndarray_one_value<'ctx, G: CodeGenerator + ?Sized>(
     } else if ctx.unifier.unioned(elem_ty, ctx.primitives.bool) {
         ctx.ctx.bool_type().const_int(1, false).into()
     } else if ctx.unifier.unioned(elem_ty, ctx.primitives.str) {
-        ctx.gen_string(generator, "1")
+        ctx.gen_string(generator, "1").into()
     } else {
         unreachable!()
     }
diff --git a/nac3core/src/codegen/stmt.rs b/nac3core/src/codegen/stmt.rs
index ea5869d6..4b2cf4e2 100644
--- a/nac3core/src/codegen/stmt.rs
+++ b/nac3core/src/codegen/stmt.rs
@@ -1780,7 +1780,7 @@ pub fn gen_stmt<G: CodeGenerator>(
                         return Ok(());
                     }
                 }
-                None => ctx.gen_string(generator, ""),
+                None => ctx.gen_string(generator, "").into(),
             };
             ctx.make_assert_impl(
                 generator,